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ADI LTC3894EFE#TRPBFRoHS

Manufacturer
ADI
MPN
LTC3894EFE#TRPBF
LCSC Part #
C2658705
Packaging
TSSOP-20-EP
Customer #
Key Attributes
150V Low lQ Step-Down DC/DC Controller with 100% Duty Cycle Capability
Datasheetpdf iconADI LTC3894EFE#TRPBF
In-Stock: 1
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QtyUnit PriceTotal Amount
1+$ 7.5287$ 7.53
10+$ 7.3595$ 73.60
30+$ 7.2473$ 217.42
100+$ 7.1351$ 713.51
Standard Packaging2500/Full Reel
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Products Specifications

All
TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/DC DC Switching Controllers
ManufacturerADI
PackagingTSSOP-20-EP
Synchronous RectifierNo
FeaturesAdjustable soft-start;Output voltage tracking;Light load efficient mode;Frequency synchronization;Operating status indication;Overcurrent Protection;Built-in LDO regulator
Number of Channels1
TopologyBuck
Operating Voltage4.5V~150V
Switch tube (built-in/external)External
Output Voltage800mV~60V
Operating Temperature-40℃~+125℃@(TJ)
Output Current-
Frequency - Switching50kHz~850kHz;75kHz~800kHz
Output TypeAdjustable
FunctionStep-down type
Quiescent Current9uA
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Introduction

AI Translation

The LTC3894 is a high voltage step-down DC/DC switching regulator controller. It drives a P-channel power MOSFET switch allowing 100% duty cycle operation. It enables a low part count, simple, and robust solution for high reliability, high voltage applications. The LTC3894 operates over a wide input voltage range from 4.5V to 150V and can regulate output voltages from 0.8V to 60V. It offers excellent light load efficiency, drawing only 9μA quiescent current while regulating the output voltage with no load. Its peak current mode, constant frequency architecture provides for good control of switching frequency and output current limit. The switching frequency can be programmed from 50kHz to 850kHz with an external resistor and can be synchronized to an external clock from 75kHz to 800kHz. The LTC3894 offers programmable output voltage softstart or tracking. Safety features include overvoltage, overcurrent and overtemperature protection with a power good output monitor with adjustable threshold. The LTC3894 is available in a thermally enhanced 20-Pin TSSOP package with leads removed to accommodate high voltage creepage and clearance requirements.

Features

AI Translation
  • Wide Operating Range: 4.5V to 150V
  • Wide Output Range: 0.8V to 60V
  • 9μA IQ when Regulating 48VIN to 3.3VOUT
  • 16μA IQ when Regulating 12VIN to 3.3VOUT
  • Very Low Dropout Operation: 100% Duty Cycle
  • Adjustable Input Overvoltage Lockout
  • Programmable PGOOD Undervoltage Monitor
  • RSENSE or Inductor DCR Current Sensing
  • Selectable High Efficiency Burst Mode Operation or Pulse-Skipping Mode at Light Loads
  • Programmable Fixed Frequency: 50kHz to 850kHz
  • Phase-Lockable Frequency: 75kHz to 800kHz
  • Internal Fixed Soft-Start and External Programmable Soft-Start or Voltage Tracking
  • Strong MOSFET Gate Driver with Selectable Undervoltage Lockout Thresholds
  • Optional External NMOS for Gate Driver Bias in High Power Applications

Applications

AI Translation
  • Automotive and Industrial Power Systems
  • Telecommunication Power Systems
  • Distributed Power Systems